New York frost dates: I
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Ilion | May 5 | Oct 4 | 152 d | 5b |
| Indian Lake | May 23 | Sep 27 | 127 d | 4b |
| Inlet | May 21 | Sep 24 | 126 d | 4a |
| Interlaken | May 1 | Oct 21 | 173 d | 6a |
| Inwood | Apr 2 | Nov 14 | 226 d | 7b |
| Ionia | May 2 | Oct 17 | 168 d | 6a |
| Irving | May 3 | Oct 20 | 170 d | 6b |
| Irvington | Apr 20 | Oct 26 | 189 d | 7a |
| Island Park | Apr 7 | Nov 8 | 215 d | 7b |
| Islandia | Apr 10 | Nov 2 | 206 d | 7b |
| Islip | Apr 4 | Nov 11 | 221 d | 7b |
| Islip Terrace | Apr 10 | Nov 2 | 206 d | 7b |
| Ithaca | May 11 | Oct 3 | 145 d | 6a |